CAJ | 학술논문

假定BES合作组在辐射衰变J/ψ→γp(-p)中观测到的p(-p)谱的增强是由于存在一个pp的分子态,用线性σ模型计算了它的束缚能和寿命.具体考虑了这种增强现象是由于p(-p)可能形成一个S波或P波共振态,并把计算结果和实验数据做了比较.与氘核不同,由于p(-p)可以通过s道湮没,因此通过研究它的总宽度可以获得线性σ模型及其相关问题的信息.
가정BES합작조재복사쇠변J/ψ→γp(-p)중관측도적p(-p)보적증강시유우존재일개pp적분자태,용선성σ모형계산료타적속박능화수명.구체고필료저충증강현상시유우p(-p)가능형성일개S파혹P파공진태,병파계산결과화실험수거주료비교.여도핵불동,유우p(-p)가이통과s도인몰,인차통과연구타적총관도가이획득선성σ모형급기상관문제적신식.
Provided the enhancementin the pp spectrum in radiative decay J/ψ→γp(-p) observed by the BES collaboration is due to an existence of a p(-p) molecular state, we calculate its binding energy and lifetime in the linear σ model. Concretely, we consider a possibility that the enhancement is due to a p(-p) resonance which is in either S-wave or P-wave structure and compare our results with the data. Moreover, p(-p) can annihilate at s-channel which is absent in deuteron, thus by studying the total width of the pp bound state,we may gain more information about the linear σ model and some concerned issues.